Electrical impedance analysis based quantification of microstructural changes in concretes due to non-steady state chloride migration

► Quantifies the microstructural changes in concrete as a function of the chemical composition of the binder due to non-steady state chloride migration test. ► Electrical impedance spectroscopy and circuit models used to quantify the microstructural changes, and circuit model parameters are shown to relate well to the overall microstructure. ► Provides a methodology to correct for the penetration depths for an equivalent 30 V applied voltage from any applied voltage in the NSSM test.